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    Author(s): Ernest Wright; Robert F. Tarrant
    Date: 1958
    Source: PNW Old Series Research Notes No. 160, p. 1-7
    Publication Series: Scientific Journal (JRNL)
    Station: Pacific Northwest Research Station
    PDF: View PDF  (330 KB)


    The association of certain fungi with plant roots results in formation of an organ called a mycorrhiza. There are two principal types of mycorrhizae: those with the fungus confined internally in the root, or endotrophic mycorrhizae, and those with both internal fungus development and an external fungal mantle enveloping the root tips, or ectotrophic mycorrhizae. Intergradation between the two types may also occur.

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    Wright, Ernest; Tarrant, Robert F. 1958. Occurrence of mycorrhizae after logging and slash burning in the Douglas-fir forest type. PNW Old Series Research Notes No. 160, p. 1-7

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